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I swear I used denatured alcohol on my radio knobs and they came out fine as bare black rubber and are still fine a few years later. But I posted that on one of the Facebook Boxster groups and someone cursed me out because he said that just made his knobs worse and ruined them.
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Current: 2022 718 Cayman GT4, PDK bone stock (the dark side).
Former: 2003 S, 3.6 LN Nickies, ARP rod bolts, under-drive pulley, Fabspeed sport headers, Softronic tune, 987 airbox 987 motor mount, Function-First Sport motor mount insert, Ben's short shifter, Nine8Six projector headlights & center caps, ROW M030, stainless flexible brake lines, B-K rollbar extension & fire extinguisher mount, hardtop
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